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Acta Prataculturae Sinica ›› 2021, Vol. 30 ›› Issue (6): 121-132.DOI: 10.11686/cyxb2020227

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Bibliometric analysis of research on endophytic fungi in grasses and non-grasses based on the CNKI database

Shu-qin LI1(), Zhen-jiang CHEN1, Tai-xiang CHEN1, Xiu-zhang LI2, Biao-biao MU3, Chun-jie LI1()   

  1. 1.State Key Laboratory of Grassland Agro-ecosystems,Key Laboratory of Grassland Livestock Industry Innovation,Ministry of Agriculture and Rural Affairs,Engineering Research Center of Grassland Industry,Ministry of Education,Gansu Technology Innovation Centre of Western China Grassland Industry,College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,China
    2.Academy of Animal and Veterinary Sciences,Qinghai Academy of Animal and Veterinary Sciences,Xining 810016,China
    3.Lanzhou Ecological Forestry Experiment Site,Lanzhou 730085,China
  • Received:2020-08-04 Revised:2020-11-26 Online:2021-05-21 Published:2021-05-21
  • Contact: Chun-jie LI

Abstract:

The aim of this study was to clarify the research status and hotspots for endophytic fungi in China, based on relevant literature published between 1999 and 2019 and listed in the Chinese National Knowledge Infrastructure (CNKI) database. Literature related to endophytic fungi in grasses and non-grasses was manually selected from the search results, and a bibliometric analysis was carried out. A total of 5333 articles related to endophytic fungi were found, of which 377 were related to the endophytic fungus Epichlo? found in grasses. Analyses of publication frequency showed that the number of articles related to non-grass endophytic fungi has increased linearly with a rapid rate of increase, while the number of articles related to grass endophytic fungi has increased slowly, suggesting that there is great potential for research and development in that area. Research papers on endophytic fungi in grasses and non-grasses account for a large proportion of publications in the areas of biology, crops, and other disciplines. The main journal publishing papers on grass endophytic fungi is “Pratacultural Science”, and the main research institutions engaged in research on grass endophytic fungi are Lanzhou University, Nankai University, and Nanjing Agricultural University. The main journals publishing papers on non-grass endophytic fungi are “Natural Product Research and Development” and “Journal of Anhui Agricultural Sciences”, and the main research institutions engaged in research on that topic are the Northwest Agriculture and Forestry University, Yunnan University, and Hainan University. The National Natural Science Foundation of China is the main source of financial support for research of endophytic fungi, and plays an important role in furthering research and development in this area. Among the published papers found using ‘endophytic fungi’ as key words, ‘Advances of researches on endophytic fungi’ published in Mycosystema in 2001 had the most citations (819). Among the topics related to grass endophytic fungi, ‘Roles of grass endophyte-netyphodium association in pastoral agriculture systems’ was the most frequently cited (172). Analyses of high-frequency keywords related to endophytic fungi in grasses revealed that the current research hotspots are the physiological and biochemical mechanism of resistance of endophytic fungi to hosts-defenses, and the secondary metabolites produced by symbionts. This bibliometric analysis indicates that there is an increasing trend to study endophytic fungi in grasses and other plants. Areas for further research are the functional mining of endophytic fungi and host-endophyte interaction mechanisms. Understanding the mechanism of stress resistance will be useful for developing strategies to extend the utilization of endophytic fungi.

Key words: endophyte, grass, CNKI, bibliometrics